废弃油脂与减压蜡油共催化裂化技术开发及工业试验

Development and Industrial Test of Co-Processing Technology for Catalytic Cracking of Waste Edible Oil and VGO

在研究脂肪酸酯原位催化转化和分子筛对脂肪酸酯催化转化影响的基础上,研究了废弃油脂与减压蜡油的共催化裂化工艺,并进行了工业试验。结果表明,脂肪酸酯在分子筛催化剂作用下优先发生C-O键断裂,且USY分子筛有利于获得较高的液收率;废弃油脂和减压蜡油在共催化裂化过程中存在相互影响,在一定的反应条件下掺炼少量的废弃油脂可以获得较好的产品分布;在工业催化裂化装置掺炼废弃油脂时,其产品质量未发生明显变化,但液化气脱硫系统受到一定影响。

Based on the studies of in-situ catalytic conversion and effect of zeolite on the catalytic conversion of fatty acid ester, the co-processing of waste edible oil （WEO） and VGO by FCC technology was investigated firstly, and then the industrial test was carried out. The results showed that the C--O bond of fatty acid ester cracked preferentially, and USY zeolite was beneficial to the high total liquid yield. WEO had influence on the conversion of the VGO in the co-processing. The better product fractions. The distribution was obtained under the certain reaction conditions and the WEO mass industrial test showed that the product qua WEO in VGO, but the operation of LPG desulfurization s lity had no obvious change after blending ystem was affected.